Put the ground coffee into the pot, pour over it boiling water; let it come to the boiling-point; remove, and stir into it the slightly beaten white of an egg and the crushed shell; replace it on the fire and let it boil one minute. This is to clear the coffee of the fine particles held in suspension. Pour a tablespoonful of cold water down the spout and place it on the side of the range where it will be perfectly still for five minutes, then pour off carefully the liquid coffee. Do not let the coffee boil three minutes altogether. The aroma of the coffee is the escaped volatile oils, all that is lost detracts just so much from the flavor of the drink.